Oregon State University, University of Alaska Fairbanks and Woods Hole Oceanographic Institution
Chukchi Sea, Arctic, Summer 2025
Study objectives
A Slocum G2 glider was deployed in the Chukchi Sea off the northwest coast of Alaska on July 5, 2025 to study the occurrence of several species of marine mammals, including fin, bowhead, and beluga whales, as well as bearded seals and walrus. This project is designed to examine relationships between marine mammal distribution and oceanographic conditions monitored by the glider. Results shown on this page have been reviewed by an experienced analyst (Kate Stafford) and represent locations and times where the near real-time passive acoustic detection data provide evidence of species occurrence.
Principal Investigators: Kate Stafford (Oregon State University), Seth Danielson (University of Alaska Fairbanks), and Mark Baumgartner (WHOI)
Analyst: Kate Stafford (Oregon State University)
Platform location:
Analyst-reviewed species occurrence maps:
Daily analyst review:
| | Detected |
| Possibly detected |
| Not detected |
Time series:
Diel plot:
Oceanographic observations:
Links to detailed information:
Automated detection data
Analyst notes
DMON/LFDCS diagnostics
Platform diagnostics
Questions
Please email Mark Baumgartner at mbaumgartner@whoi.edu. For a general desciption of the detection system and the autonomous platforms, visit dcs.whoi.edu.
Acknowledgements
The Teledyne Webb Research Slocum underwater glider used in this study was expertly prepared by the University of Alaska (UAF) College of Fisheries and Ocean Science (CFOS) underwater glider operations team. This deployment was made possible by Rebecca Woodgate (University of Washington), chief scientist of the deployment cruise on the R/V Norseman II. At sea assistance was provided by the captain and crew of the R/V Norseman II. Support for the development of the Arctic marine mammal call library as well as the preparation and operation of the glider in 2025 was provided by the Alaska Ocean Observing System. The glider was procured in 2016 with support from the North Pacific Research Board.
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